Skip Ribbon Commands
Skip to main content
Ky.gov An Official Website of the Commonwealth of Kentucky

Energy and Environment Cabinet

Photographed by Roberta Burnes

Division for Air Quality
Air Monitoring Methods

Direct Reading (Continuous) Monitors

These analyzers run 24 hours a day, seven days a week, and data is collected by a data acquisition system.  The instruments are housed in temperature-controlled shelters. Ozone, sulfur dioxide, oxides of nitrogen, and mercury are analyzed in the Kentucky network using continuous monitors.

    Air Monitoring Shelter                                                                            Continuous Monitor Rack

               Typical Air Monitoring Shelter                                                                        Continuous Monitors and Data Acquisition System

Manual Sampling

This method of monitoring involves collecting a sample of air onto a filter or within a summa canister for 24 hours.  The sample is then analyzed by a laboratory. Particulate matter (PM10, PM2.5), lead, and air toxics samples are collected using manual methods.

   PM2.5 Sampler                                          Air Toxics Sampler

                    PM2.5 Sampler                                                                      Air Toxics Sampler  

Continuous SamplingContinuous Sampler

Continuous sampling instrumentation is a hybrid of direct reading monitors and manual samplers. With this type of monitoring, a sample is collected over a short period of time and then is processed by additional instrumentation either included in or attached directly to the sampler. PM2.5 data is collected in this manner.